From: Yu Kuai <yukuai3@xxxxxxxxxx>
Now that previous patch make sure that stop_sync_thread() can successfully
stop sync_thread, and lvm2 tests won't hang anymore. However, the test
lvconvert-raid-reshape.sh still fail and complain that ext4 is
corrupted.
The root cause is still not clear yet, however, let's convert dm-raid
back to use md_reap_sync_thread() directly. This is not safe but at
least there won't be new regressions. We can decide what to do after
figuring out the root cause.
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
drivers/md/md.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7db749ba7e60..3e8dd020bf9f 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4909,6 +4909,14 @@ static void stop_sync_thread(struct mddev *mddev, bool locked, bool check_seq)
if (work_pending(&mddev->sync_work))
flush_work(&mddev->sync_work);
+ if (!mddev->gendisk) {
+ mddev_lock_nointr(mddev);
+ md_reap_sync_thread(mddev);
+ if (!locked)
+ mddev_unlock(mddev);
+ return;
+ }
+
wait_event(resync_wait,
!test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
(check_seq && sync_seq != atomic_read(&mddev->sync_seq)));
--
2.39.2
